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 30573-61accf17c8) Lines: 1467 1530 95.9 % Date: 2025-12-16 09:22:09 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	15271
_sqrtnr	22706
polrootsbound_i	27298
polrootsbound	27305
RgX_normalize1	35906
ZX_realroots_irred	48650
realroots	50627
ZX_sturm_irred	116802
ZX_sturm_i	123197
split_pols	166721
polsolve	166722
splitcauchy	166725
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267065
QX_complex_roots	296481
_gen_zero	326134
fix_roots1	398484
conformal_mapping	467935
split_1	467935
split_0_1	468294
split_0_2	468295
parameters	493979
split_2	493979
logradius	493980
update_radius	493980
optimize_split	493984
split_fromU	493984
split_0	494347
dft	502368
refine_F	502369
all_roots	536189
clean_roots	536232
fix_roots	537289
a_posteriori_errors	537292
mygprec_special	537292
logmodulus	606768
logpre_modulus	606772
abs_update_r	778653
ind_maxlog2	902698
isexactscalar	931714
isreal	961918
initdft	996347
dual_modulus	1012480
usp	1126061
ZX_sturmpart	1128194
check_ab	1178821
tocomplex	1214157
isvalidcoeff	1230264
ZX_Uspensky	1313861
conformal_basecase	1403914
conformal_pol	1404031
fujiwara_bound_real	1406897
split_complete	1525974
homothetie	1610133
append_clone	1614305
logmin_modulus	1614823
root_error	1912765
mygprecrc_special	2179376
ZX_rescale2prim	2233823
cmp_complex_appr	2238707
fujiwara_bound	2271892
checkbound	2354771
refine_H	2460540
scalepol	4289478
mygprec_absolute	4340546
_mp_mul	4374506
logmax_modulus	4451007
splitpoleval	5235626
bkeval_single_power	5235738
newton_polygon	5507330
X2XP1	5990490
_mp_sqr	6298186
dblexp	6549182
quicktofp	6979437
RgX_gtofp_bit	7031786
abs_update	8005993
mydbllogr	9547368
homothetie2n	9957967
_gen_nored	11203782
eval_rel_pol	13138480
fft	14159957
_gen_one	14472005
ZX_to_ZiX	16460873
pol_to_gaussint	17589466
_mp_add	24662233
_mp_cmul	34766133
myshiftrc	35507418
homothetie_gauss	36497151
findpower	40955037
lower_bound	40955823
graeffe	49509056
mydbllog2r	56184821
mygprec	63759939
ZiX_sqr	99029931
myshiftic	135841984
mygprecrc	215210863
mydbllog2i	226445114
dbllog2	302134158

Generated by: LCOV version 1.16