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

Generated by: LCOV version 1.16