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 30610-dfc8ed42cd) Lines: 1467 1530 95.9 % Date: 2026-01-14 09:22:13 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296163
RgX_gtofp_bit	7028876
RgX_normalize1	35731
X2XP1	5989463
ZX_Uspensky	1313675
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5390
ZX_realroots_irred	48565
ZX_rescale2prim	2233404
ZX_sturm	6395
ZX_sturm_i	122975
ZX_sturm_irred	116580
ZX_sturmpart	1128177
ZX_to_ZiX	16448205
ZiX_sqr	99002216
_gen_nored	11196820
_gen_one	14470062
_gen_zero	325987
_intervalcmp	0
_mp_add	24660256
_mp_cmul	34756567
_mp_mul	4374469
_mp_sqr	6298095
_mp_sub	0
_sqrtnr	22594
a_posteriori_errors	536973
abs_update	8003279
abs_update_r	778520
all_roots	535870
append_clone	1613489
bkeval_single_power	5234488
check_ab	1178804
checkbound	2354738
checkvalidpol	266890
clean_roots	535918
cleanroots	231763
cmp_complex_appr	2237179
conformal_basecase	1403450
conformal_mapping	467778
conformal_pol	1403570
dblexp	6547093
dbllog2	302010512
dft	502220
dual_modulus	1012163
eval_rel_pol	13134025
fft	14154601
fft2	7462
findpower	40942182
fix_roots	536975
fix_roots1	398347
fujiwara_bound	2270955
fujiwara_bound_real	1406665
graeffe	49493226
homothetie	1609580
homothetie2n	9954199
homothetie_gauss	36486265
ind_maxlog2	902409
initdft	996051
isexactpol	239753
isexactscalar	931714
isreal	961610
isvalidcoeff	1228142
logmax_modulus	4449372
logmin_modulus	1614303
logmodulus	606535
logpre_modulus	606531
logradius	493829
lower_bound	40941997
mydbllog2i	226352557
mydbllog2r	56169398
mydbllogr	9544034
mygprec	63739420
mygprec_absolute	4337345
mygprec_special	536979
mygprecrc	215116923
mygprecrc_special	2178236
myshiftic	135791160
myshiftrc	35494424
newton_polygon	5505084
optimize_split	493832
parameters	493829
pol_to_gaussint	17583227
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166696
quicktofp	6976575
realroots	50627
refine_F	502217
refine_H	2459874
root_error	1911569
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288066
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494192
split_0_1	468140
split_0_2	468135
split_1	467779
split_2	493827
split_complete	1525360
split_fromU	493832
split_pols	166691
splitcauchy	166703
splitpoleval	5234932
tocomplex	1213141
update_radius	493830
usp	1125878

Generated by: LCOV version 1.16