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 30604-e5d817ee12) Lines: 1467 1530 95.9 % Date: 2026-01-08 09:21:40 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296166
RgX_gtofp_bit	7029191
RgX_normalize1	35733
X2XP1	5989741
ZX_Uspensky	1313675
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5390
ZX_realroots_irred	48567
ZX_rescale2prim	2233501
ZX_sturm	6395
ZX_sturm_i	122968
ZX_sturm_irred	116572
ZX_sturmpart	1128181
ZX_to_ZiX	16451649
ZiX_sqr	99014443
_gen_nored	11197683
_gen_one	14469691
_gen_zero	325995
_intervalcmp	0
_mp_add	24661251
_mp_cmul	34757213
_mp_mul	4374371
_mp_sqr	6297994
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	536981
abs_update	8003754
abs_update_r	778538
all_roots	535869
append_clone	1613515
bkeval_single_power	5234702
check_ab	1178808
checkbound	2354743
checkvalidpol	266892
clean_roots	535925
cleanroots	231763
cmp_complex_appr	2237269
conformal_basecase	1403498
conformal_mapping	467795
conformal_pol	1403617
dblexp	6547390
dbllog2	302048348
dft	502241
dual_modulus	1012204
eval_rel_pol	13134577
fft	14155600
fft2	7462
findpower	40946204
fix_roots	536980
fix_roots1	398354
fujiwara_bound	2270954
fujiwara_bound_real	1406649
graeffe	49498091
homothetie	1609646
homothetie2n	9954629
homothetie_gauss	36488795
ind_maxlog2	902432
initdft	996090
isexactpol	239753
isexactscalar	931714
isreal	961644
isvalidcoeff	1228149
logmax_modulus	4449630
logmin_modulus	1614377
logmodulus	606561
logpre_modulus	606557
logradius	493850
lower_bound	40945680
mydbllog2i	226377397
mydbllog2r	56171418
mydbllogr	9544568
mygprec	63742840
mygprec_absolute	4337491
mygprec_special	536984
mygprecrc	215132716
mygprecrc_special	2178269
myshiftic	135809513
myshiftrc	35496467
newton_polygon	5505328
optimize_split	493851
parameters	493849
pol_to_gaussint	17584077
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166689
quicktofp	6976645
realroots	50627
refine_F	502236
refine_H	2460001
root_error	1911618
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288229
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494211
split_0_1	468158
split_0_2	468158
split_1	467794
split_2	493848
split_complete	1525397
split_fromU	493851
split_pols	166684
splitcauchy	166698
splitpoleval	5235062
tocomplex	1213157
update_radius	493850
usp	1125899

Generated by: LCOV version 1.16