Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30590-f14e077362) Lines: 1467 1530 95.9 % Date: 2026-01-02 09:20:44 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15196
_sqrtnr	22588
polrootsbound_i	27125
polrootsbound	27130
RgX_normalize1	35733
ZX_realroots_irred	48550
realroots	50627
ZX_sturm_irred	116570
ZX_sturm_i	122965
split_pols	166679
polsolve	166680
splitcauchy	166686
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296157
_gen_zero	325933
fix_roots1	398346
split_1	467782
conformal_mapping	467784
split_0_1	468146
split_0_2	468146
logradius	493827
parameters	493830
split_2	493831
update_radius	493833
optimize_split	493834
split_fromU	493834
split_0	494196
refine_F	502218
dft	502222
all_roots	535864
clean_roots	535916
fix_roots	536970
a_posteriori_errors	536972
mygprec_special	536977
logpre_modulus	606528
logmodulus	606531
abs_update_r	778510
ind_maxlog2	902419
isexactscalar	931714
isreal	961614
initdft	996051
dual_modulus	1012178
usp	1125872
ZX_sturmpart	1128223
check_ab	1178850
tocomplex	1213129
isvalidcoeff	1228149
ZX_Uspensky	1313707
conformal_basecase	1403464
conformal_pol	1403583
fujiwara_bound_real	1406671
split_complete	1525363
homothetie	1609597
append_clone	1613477
logmin_modulus	1614307
root_error	1911577
mygprecrc_special	2178223
ZX_rescale2prim	2233588
cmp_complex_appr	2237205
fujiwara_bound	2270951
checkbound	2354830
refine_H	2459878
scalepol	4288123
mygprec_absolute	4337271
_mp_mul	4374397
logmax_modulus	4449429
bkeval_single_power	5234228
splitpoleval	5234320
newton_polygon	5505051
X2XP1	5989852
_mp_sqr	6297730
dblexp	6547103
quicktofp	6976527
RgX_gtofp_bit	7028844
abs_update	8003682
mydbllogr	9544766
homothetie2n	9954166
_gen_nored	11197016
eval_rel_pol	13134025
fft	14154968
_gen_one	14468753
ZX_to_ZiX	16449642
pol_to_gaussint	17583420
_mp_add	24658358
_mp_cmul	34755361
myshiftrc	35494098
homothetie_gauss	36485514
lower_bound	40943196
findpower	40943461
graeffe	49490468
mydbllog2r	56169236
mygprec	63739418
ZiX_sqr	99005014
myshiftic	135754056
mygprecrc	215116394
mydbllog2i	226355713
dbllog2	302001153

Generated by: LCOV version 1.16